The text focuses heavily on the changing endings of words, which is critical for correctly reading the Qur'an and classical literature. Bilingual Reference: Many PDFs, such as the bilingual rendition of al-Tuhfat al-Saniyyah

It features clear English explanations, tables, and side-by-side Arabic text, making it highly accessible for self-study.

This is the resource you are most likely looking for. It is a complete, modern bilingual rendition of classic commentary.

2. "Al-Ajrumiyyah: An Introduction to Arabic Grammar" by Amienoellah Abderoef